Mum Michelle, and dad Dean are now trying to raise awareness of the rare cancer

Patrick Tonks, chief executive of the Childhood Eye Cancer Trust, said: “Symptoms of retinoblastoma can be very subtle and children often seem perfectly well, so the warning signs are easy to miss.

“Ethan’s parents have since learned about the ‘white glow’ and wish they’d known about it sooner, so that’s why they are working with us to raise awareness.

“Retinoblastoma is very rare, with only 50 cases diagnosed a year in the UK, so it’s important that parents don’t panic but if you see anything unusual in your child’s eyes, please get them checked out urgently just to rule out anything serious.

“Retinoblastoma has one of the best cure rates of all childhood cancers but early diagnosis is vital.”

Dean and son Mark are set to take part in the Chepstow 5km Bounce Run in June, to raise money for the Childhood Eye Cancer Trust – to make a donation visit their page here.

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